(19)

(11)

EP 4 052 124 A1

(12)

(43) Date of publication: 07.09.2022 Bulletin 2022/36 (21) Application number: 20815994.7 (22) Date of filing: 30.10.2020

(51) International Patent Classification (IPC):  G06F 9/48(2006.01) H04W 12/037(2021.01) G06F 9/455(2018.01) H04L 29/06(2006.01) G06F 3/06(2006.01) (52) Cooperative Patent Classification (CPC): H04W 12/037; H04L 63/0272; H04L 63/16; G06F 9/45558; G06F 2009/4557; G06F 2009/45595; G06F 2009/45587; G06F 9/5072 (86) International application number: PCT/US2020/058165 (87) International publication number: WO 2021/108075 (03.06.2021 Gazette 2021/22)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 29.11.2019 US 201916699414 (71) Applicant: Amazon Technologies, Inc. Seattle, WA 98108-1226 (US)

(72) Inventors: PARULKAR, Ishwardutt Seattle, Washington 98109-5210 (US) ELISSAIOS, Georgios Seattle, Washington 98109-5210 (US) GUPTA, Diwakar Seattle, Washington 98109-5210 (US) SHEVADE, Upendra Bhalchandra Seattle, Washington 98109-5210 (US) DUNSMORE, Devlin Roarke Seattle, Washington 98109-5210 (US) RENDA, Scott Seattle, Washington 98109-5210 (US) BALLANTYNE, Dougal Stuart Seattle, Washington 98109-5210 (US) (74) Representative: Haseltine Lake Kempner LLP  Cheapside House 138 Cheapside London EC2V 6BJ London EC2V 6BJ (GB)